1/*
2 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31
32#include "namespace.h"
33#include <stdarg.h>
34#include <fcntl.h>
35#include <pthread.h>
36#include "un-namespace.h"
37#include "thr_private.h"
38
39int __fcntl(int fd, int cmd,...);
40extern int __fcntl_compat(int fd, int cmd,...);
41
42__weak_reference(__fcntl, fcntl);
43
44int
45__fcntl(int fd, int cmd,...)
46{
47	struct pthread *curthread = _get_curthread();
48	int	ret, check = 1;
49	va_list	ap;
50
51	_thr_cancel_enter(curthread);
52
53	va_start(ap, cmd);
54	switch (cmd) {
55	case F_DUPFD:
56		ret = __sys_fcntl(fd, cmd, va_arg(ap, int));
57		/*
58		 * To avoid possible file handle leak,
59		 * only check cancellation point if it is failure
60		 */
61		check = (ret == -1);
62		break;
63	case F_SETFD:
64	case F_SETFL:
65		ret = __sys_fcntl(fd, cmd, va_arg(ap, int));
66		break;
67	case F_GETFD:
68	case F_GETFL:
69		ret = __sys_fcntl(fd, cmd);
70		break;
71	default:
72		ret = __fcntl_compat(fd, cmd, va_arg(ap, void *));
73	}
74	va_end(ap);
75
76	_thr_cancel_leave(curthread, check);
77
78	return (ret);
79}
80